drm/nouveau/fbcon: use fence for sync, rather than notifier

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index bce2e73b9ebdd4af0ef31e2d3b95f2d6e8096a16..153b9a15469b5053507507587bd20dc411417146 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -153,7 +153,7 @@ nouveau_fbcon_sync(struct fb_info *info)
        struct drm_device *dev = nfbdev->dev;
        struct drm_nouveau_private *dev_priv = dev->dev_private;
        struct nouveau_channel *chan = dev_priv->channel;
-       int ret, i;
+       int ret;
 
        if (!chan || !chan->accel_done || in_interrupt() ||
            info->state != FBINFO_STATE_RUNNING ||
@@ -163,38 +163,8 @@ nouveau_fbcon_sync(struct fb_info *info)
        if (!mutex_trylock(&chan->mutex))
                return 0;
 
-       ret = RING_SPACE(chan, 4);
-       if (ret) {
-               mutex_unlock(&chan->mutex);
-               nouveau_fbcon_gpu_lockup(info);
-               return 0;
-       }
-
-       if (dev_priv->card_type >= NV_C0) {
-               BEGIN_NVC0(chan, NvSub2D, 0x010c, 1);
-               OUT_RING  (chan, 0);
-               BEGIN_NVC0(chan, NvSub2D, 0x0100, 1);
-               OUT_RING  (chan, 0);
-       } else {
-               BEGIN_NV04(chan, 0, 0x0104, 1);
-               OUT_RING  (chan, 0);
-               BEGIN_NV04(chan, 0, 0x0100, 1);
-               OUT_RING  (chan, 0);
-       }
-
-       nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
-       FIRE_RING(chan);
+       ret = nouveau_channel_idle(chan);
        mutex_unlock(&chan->mutex);
-
-       ret = -EBUSY;
-       for (i = 0; i < 100000; i++) {
-               if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
-                       ret = 0;
-                       break;
-               }
-               DRM_UDELAY(1);
-       }
-
        if (ret) {
                nouveau_fbcon_gpu_lockup(info);
                return 0;